Gliederung

Objective

To compare the functional outcome after bilateral implantation of the TwinsetÂ® MIOL to the ArrayÂ® MIOL in patients with age-related cataract.

Methods

Within a prospective, non-randomized study 40 patients, scheduled for bilateral cataract surgery with implantation of a MIOL were assigned alternately to one of two study groups: group 1: implantation of the ArrayÂ®-MIOL in both eyes, group 2: implantation of the TwinsetÂ®-MIOL consisting of a distance-dominant MIOL (first eye) and a near-dominant MIOL (second eye). After 3 months, the following investigations were performed: visual acuity (VA) including the determination of distance, near and distance-corrected near VA, the assessment of low contrast VA and contrast sensitivity testing. Visual symptoms were evaluated by a questionnaire.

Results

30 patients (ArrayÂ®: 14, TwinsetÂ®: 16) could be examined 3 months postoperatively. There was no difference in distance VA, low contrast VA and contrast sensitivity between the two groups. In group 2, the distance-corrected near VA was significantly better than in group 1 (p<0,05). More than one third of patients of both groups reported halos.

Conclusions

Both MIOL provided a good distance VA while the TwinsetÂ®-MIOL lead to a better near VA without near addition. On the other hand, the diffractive and asymmetric system of the TwinsetÂ®-MIOL is not able to eliminate dysphotopsia.